Sleigh bed

ABSTRACT

The sleigh bed platform is intended for use in ice fishing for transport of equipment such as a tent shelter and sized to accommodate a single reclining person for rest on the ice. Sleigh bed invention is very light easy to pull across thin ice. Three laminated plastic layers with a inner component of expanded polystyrene form a rigid truss and thermal barrier that makes the sleigh bed a comfortable resting place. Expanded polystyrene is insulation and extremely buoyant providing a float in cases of breaking thru lake ice. Multiple soft rope handles secure loads with no sharp edges around the bed. A second invention use is for evacuation of injured skiers. Lightweight sleigh bed is easy to carry to an injured skier. A rigid front handle facilitates moving down hill with a passenger secured to the sleigh bed.

Sled or sleigh bed platform of rigid strength to provide transport for equipment or a person fully reclined over land, snow and ice. Due to the embodiment of materials and simplicity of construction the platform is very light weight and easily carried by hand or pulled by handle, cable or rope. Sleigh bed edges include a plurality of thru holes with rope laced into them to provide numerous hand holds and tethering loops. Elastic cords or bungee straps may hook on these lopes holding equipment or incapacitated person in place. High thermal resistance of the sleigh bed reflects body heat of a person sitting or reclining to enhance comfort. Diagonal front or plow edge and runners the length of the platform sides and in the center of the breadth facilitate ease of moving the sleigh bed over natural terrain including soil, grass, snow and

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 SLEIGH BED exploded drawing showing three component parts: 1 The top polyethylene plastic cover 2 Central foam insulating core 3 Polyethylene plastic enveloping base.

FIG. 2 SLEIGH BED assembled oblique view with rope hand holds and pull rope.

FIG. 3 SLEIGH BED rigid front handle with side and top view of connections.

DESCRIPTION AND UNIQUE CHARACTERISTICS FIG. 1

Sleigh bed in accordance with the present invention is illustrated in FIG.1 showing three component parts. The outer skin or surface panels may consist of molded polyethylene plastic, laminates of fiberglass, vinyl plastic or laminates of wood. The top or upper flat surface panel 1 with edges curving up at 90 degrees on three sides and the front plow edge at 45 degrees more or less. Bottom surface sled embodiment 3 with longitudinal ski runners 4 and 90 degree sides contain the floatation core material 2 and rise up to a rounded edge 5 for strength and to encompass the upper panel 1 top side edges. Holes in the top and bottom panels 7 aligned in the top edge to permit the lacing of rope handles on the three sides. Front or plow edge 6 of bottom 3 sleigh panel to raise up at a 45 degree angle more or less to a top edge rounded over to cover the top skin panel. The outer upper and lower panel embodiments are laminated to the center core 2 of buoyant expanded polystyrene foam forming a single platform impervious to water and the elements.

FIG. 2

Sleigh Bed Assembly of expanded polystyrene insulating core has great strength when laminated to rigid top 1 and bottom 3 surface panels. The molded shape of the central core and front diagonal 6 sleigh core of expanded polystyrene are all encapsulated and laminated to the plastic outer skin surfaces. Expanded polystyrene reflects body heat. This is demonstrated by placing the hand on the surface of an expanded polystyrene sheet.

There is a feeling of warmth as body heat is reflected back to the hand. Because expanded polystyrene is a closed cell foam it does not retain moisture but has the ability to pass moisture back into the atmosphere. Expanded polystyrene is extremely buoyant: one cubic foot will float 60 pounds of weight at water level.

Polypropylene braided rope or cord 8 laced through the upper edges 5 of the sleigh bed platform are convenient handles or tethering points. This rope or cord passing in and out of the upper edge or rail 5 adds strength but does not have hard corners that may strike or injure hands in use. At the front plow end 6 of the sleigh bed a long polypropylene rope 9 is laced thru side holes to facilitate pulling the sleigh bed forward. Braided polypropylene is strong and does not lose strength when wet or in water.

FIG. 3

Sleigh bed rescue platform for injured persons illustrates an optional configuration rigid handle 11 to extend control for steering or stopping movement. Ski Patrol or rescue persons holding the rigid handle would be able to direct or stop the sleigh bed in difficult terrain while other rescue persons with ropes attached behind would guide and reduce decent from behind. The tubular rigid metal handle 11 would swivel 180 degrees more or less on the steel plate 10 bolted through the top edge holes 7 of the sleigh bed platform. 

1-5. (canceled)
 2. Platform sleigh bed for expedition overland, snow and ice constructed to carry equipment and supplies a great distance. Three edges of the top perimeter are laced thru holes with ropes for pulling, grasping or tethering. Elastic cords, ropes and pliable covers may be connected to these ropes restraining and holding equipment placed on the platform sleigh bed. Extreme winter weather creates many difficult terrain conditions. Ease of movement or reduced effort on uneven surfaces or soft terrain including snow and ice promotes safety. Runners on side perimeters and centered longitudinally aid ease of movement. The sleigh bed platforms plastic laminations to the top and bottom of a thick foam core provide a strong but light transport platform. The relatively thin skin of polyethylene plastic laminated to the thick core of polystyrene foam forms a rigid truss of tremendous strength yet very lightweight. These plastic materials being impervious to water and the elements further enhance their stability in cold wet winter conditions.
 3. Winter ski resorts employ ski patrol personnel to transport injured or incapacitated persons down a mountain slope to safety and treatment. Foremost in evacuation is the safety of incapacitated person on difficult terrain: steep inclines, snow and ice conditions. The sleigh beds light weight, tremendous strength and very low center of gravity enhances maneuverability in difficult terrain. A plurality of hand holds, rope loops for tethering facilitate covering sheets and strapping with elastic straps to retain the injured person. The sleigh bed platforms thermal barrier attributes can promote warmth to keep an injured person from chilling and or going into a state of shock. A rigid handle adaption at the front of the sleigh gives a ski patrol person steering control on the leading edge of the sleigh. In addition the through holes with ropes on the back or the trailing edge of the sleigh enable additional ski patrol persons to restrain, direct and aid in the transport of injured persons. Summarily four aspects of the sleigh design in this claim are low center of gravity, extremely strong and light weight, a plurality of holding, tethering, restraining and enveloping fixtures to promote safe handling and thermal properties that further the injured persons safety and comfort.
 4. A floating sleigh bed for pedestrian or ice fishing transport safety on lake ice. Early winter thin ice, unfamiliar lake or river ice and late winter soft ice are a danger to persons walking thereon. The sleigh bed platform is designed to be buoyant in water. The internal expanded polystyrene core is extremely buoyant and not water soluble. On frozen lakes pedestrians pulling the sleigh bed with the front handle or tow rope will have a floatation device in hand. The sleighs remaining three edges with a plurality of closely spaced rope loop handles facilitate hand grasping or holding the sleigh bed. Falling thru the ice a pedestrian can pull the sleigh bed from any of the four sides to support their weight in the water and then maneuver back to a strong ice surface. 